webdoorcreator/WebDoorCreator.API/Controllers/DoorImageController.cs

using Microsoft.AspNetCore.Mvc;
using NLog;
using Svg;
using System.Drawing;
using WebDoorCreator.Data.Services;

namespace WebDoorCreator.API.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class DoorImageController : ControllerBase
    {
        #region Public Constructors

        public DoorImageController(IConfiguration configuration, QueueDataService DataService)
        {
            Log.Info("Starting DoorImageController");
            _configuration = configuration;
            QDataServ = DataService;
            Log.Info("Avviato DoorImageController");
        }

        #endregion Public Constructors

        #region Public Methods

        // GET: api/Alive
        [HttpGet]
        public string Get()
        {
            return "OK";
        }

        [HttpGet("GetImage.png")]
        public async Task<IActionResult> GetImagePng(int DoorId)
        {
            byte[] result = new byte[0];
            string svgContent = await QDataServ.DoorGetLastSvg(DoorId);
            if (!string.IsNullOrEmpty(svgContent))
            {
                var mySvg = SvgDocument.FromSvg<SvgDocument>(svgContent);
                //result = System.Text.Encoding.UTF8.GetBytes(svgContent);
                var myBmp = mySvg.Draw();
                result = ImageToByte2(myBmp);
            }
            return File(result, "image/png");
        }

        [HttpGet("GetImage.svg")]
        public async Task<IActionResult> GetImageSvg(int DoorId)
        {
            string svgContent = await QDataServ.DoorGetLastSvg(DoorId);
            var result = System.Text.Encoding.UTF8.GetBytes(svgContent);
            return File(result, "image/svg+xml");
        }

        #endregion Public Methods

        #region Private Fields

        private static IConfiguration _configuration = null!;

        private static Logger Log = LogManager.GetCurrentClassLogger();

        #endregion Private Fields

        #region Private Properties

        private QueueDataService QDataServ { get; set; } = null!;

        #endregion Private Properties

        #region Private Methods

        private byte[] ImageToByte2(Image img)
        {
            using (var stream = new MemoryStream())
            {
                img.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
                return stream.ToArray();
            }
        }

        #endregion Private Methods
    }
}